3138774639 has 192 divisors, whose sum is σ = 6056322048. Its totient is φ = 1401753600.

The previous prime is 3138774629. The next prime is 3138774697. The reversal of 3138774639 is 9364778313.

It is not a de Polignac number, because 3138774639 - 2⁴ = 3138774623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3138774591 and 3138774600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138774619) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 59222137 + ... + 59222189.

It is an arithmetic number, because the mean of its divisors is an integer number (31543344).

Almost surely, 2^3138774639 is an apocalyptic number.

3138774639 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

3138774639 is a deficient number, since it is larger than the sum of its proper divisors (2917547409).

3138774639 is a wasteful number, since it uses less digits than its factorization.

3138774639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 165 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 51.

The square root of 3138774639 is about 56024.7680851960. The cubic root of 3138774639 is about 1464.1538426561.

It can be divided in two parts, 3138 and 774639, that added together give a palindrome (777777).

The spelling of 3138774639 in words is "three billion, one hundred thirty-eight million, seven hundred seventy-four thousand, six hundred thirty-nine".